Blood Pressure Checker
Find out what your blood pressure reading means.
What to do
Adult blood pressure categories
For information only — not a diagnosis or medical advice. Nothing you enter is sent or stored.
How to use Blood Pressure Checker
- Enter the top (systolic) and bottom (diastolic) numbers from your monitor.
- Click “Check reading”.
- See the category and general next steps.
Frequently asked questions
Should I trust a single reading?
No. Blood pressure changes through the day. Take readings at the same time on several days, seated and rested, and share the average with your doctor.
Which number matters more?
Both matter. The category is set by whichever number is higher on the chart.
Can this replace a doctor?
No. This tool gives general estimates and self-checks for information only. It does not diagnose anything. Please see a qualified health professional for medical advice, and seek urgent care if you feel unwell.
Is Blood Pressure Checker free?
Yes. Blood Pressure Checker is free to use with no sign-up and no watermark.
Is my information saved or sent anywhere?
No. Everything is calculated in your browser. Nothing you enter is sent to a server or stored.
Does it work on my phone?
Yes. It works in any modern browser on Windows, Mac, Linux, Android and iPhone. Very large files may be slow on older phones.